Compiling and ProcessingThe Yale–Classical

Archives Corpusycac.yale.edu

Christopher Wm. WhiteUniversity of North Carolina–Greensboro

Ian QuinnYale University

5058,980

3,818,71212,415,229

composerspieces/movementsquarter notes of musicchords

What’s in it?Pitch-class and time data fromMIDI files contributed by users

of classicalarchives.com

METADATA(per piece)

TitleComposer

Catalogue NoDate

InstrumentationGenre

NationalityKey

ModulationsMIDI filename

DATA(per slice)

OffsetChord

Normal FormPC Normal Order

Global Scale DegreesHighest PitchLowest Pitch

MIDI FilenameComposerLocal TonicLocal Mode

Local Scale DegreesConfidence

A windowed key-profile analysis was performed with music21 using the Krumhansl-Schmuckler (KS) key-finding algorithm and the Bellman-Budge key pro-files (see Krumhansl 1990, Bellman 2005, and Cuthbert and Ariza 2011).

Windows were 8 slices in length. Thus each slice was analyed in 8 windows.

If a slice was analyzed in two different keys in two dif-ferent windows and the maximal KS confidence values for the two keys was 0.1 or less, no local key was re-corded. Otherwise the key producing maximal KS confi-dence was recorded as the Local Key for the slice.

“Salami slicing” is our term for a cheap way of dealing with polyphonic data. A new slice is drawn whenever a note enters or leaves the texture. Music21 calls this “chordifying.”

TIME PERIODS

KEY FINDING

WHAT’S A “SLICE”?

TOP COMPOSERS

TOP GENRES

TOP SLICES (BY SCALE DEGREE CONTENT)

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slices

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Sonata

Other S

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rto

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ter Piec

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Mvt.

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uite

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p. Son

ata

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red

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sy

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s Tri

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slices

International Conference on Music Perception and Cognition — Seoul, Korea — August 2014

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pieces

slices

SD n Log(f) SD n Log(f) SD n Log(f)I 374631 -1.05 Re Sol 64643 -1.81 vi 29171 -2.16

Sol 242347 -1.24 Ti 58621 -1.85 La Do 27243 -2.19Do 174454 -1.38 Re Fa 55378 -1.88 Le 26148 -2.20V7 156050 -1.43 Do Me 50368 -1.92 viio7 23645 -2.25i 149263 -1.45 Fa Sol Ti 44435 -1.97 iv 23533 -2.25V 146436 -1.46 IV 44273 -1.98 Do Fa 23448 -2.25

Do Mi 136987 -1.48 La 43199 -1.99 iii 22552 -2.27Do Sol 109906 -1.58 Fa Sol 42267 -2.00 vi7 21067 -2.30Mi Sol 94982 -1.64 Me Sol 41544 -2.00 bVI 19946 -2.32

Re 85732 -1.69 Me 40180 -2.02 Do Re 19853 -2.32Mi 78252 -1.73 Ti Re 38253 -2.04 Fi 19618 -2.33

Sol Ti 73901 -1.75 vii 34391 -2.09 Do Re Sol 19307 -2.34Fa 73578 -1.75 ii 29614 -2.15 Do Re Mi Sol 18288 -2.36

Re Fa Sol 68660 -1.78 Fa La 29276 -2.15 Do Re Fa 17980 -2.37